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Flux for Hardfacing by Submerged Arc Welding from Ferrochrome-manganese and Slag from the Simultaneous Reduction of Chromite and Pyrolusite
Universidad Central "Marta Abreu" de Las Villas, Universidade Federal de Uberlandia.
Anim Hlth & Vet Labs Agcy, VLA Lasswade Vet Labs Agcy Lasswade, King Abdulaziz University.
Universidad Central "Marta Abreu" de Las Villas.
University West, Department of Engineering Science, Division of Welding Technology. Universidade Federal de Uberlandia University West - Sweden Fed Univ Uberlandia UFU. (PTW)ORCID iD: 0000-0002-1005-5895
2019 (Spanish)In: Soldagem & Inspeção, ISSN 0104-9224, E-ISSN 1980-6973, Vol. 24, article id e2424Article in journal (Refereed) Published
Abstract [en]

The obtaining of a flux for hardfacing by Submerged Arc Welding (SAW), using ferrochrome-manganese and slag obtained from the simultaneous carbothermal reduction of chromite and pyrolusite is addressed. The ferrochrome-manganese and the slag were obtained, conceiving that both products satisfy the requirements of the components (alloy system and matrix) of an agglomerated flux for hardfacing. The fusion-reduction process to obtain the alloy and the slag was carried out in a direct current electric arc furnace. The pouring was carried out into water to facilitate the separation and grinding of the cast products. An experimental flux was manufactured, using the obtained alloy and slag. Deposits were obtained by SAW, which were characterized in terms of: chemical composition, microstructure and hardness. It was concluded that the flux obtained from ferrochrome-manganese and slag from the simultaneous carbothermal reduction of chromite and pyrolusite, allows to deposit an appropriate metal for work under abrasion conditions, characterized by significant carbon and chromium contents and a martensitic microstructure predominantly, with hardness of 63 HRc.

Place, publisher, year, edition, pages
2019. Vol. 24, article id e2424
Keywords [en]
Flux; SAW; Hardfacing; Slag; Ferroalloys
National Category
Manufacturing, Surface and Joining Technology Metallurgy and Metallic Materials Other Materials Engineering
Research subject
ENGINEERING, Manufacturing and materials engineering; Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-14938DOI: 10.1590/0104-9224/SI24.24ISI: 000496731100024Scopus ID: 2-s2.0-85075105493OAI: oai:DiVA.org:hv-14938DiVA, id: diva2:1391589
Available from: 2020-02-05 Created: 2020-02-05 Last updated: 2020-03-02Bibliographically approved

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